1. Bertrand PF Pappu HR 2002. Disease caused by a phytoplasm. In: Teviotdale BL Michailides TJ Pscheidt JW eds. Compendium of Nut Crop Diseases in Temperate Zones. St. Paul USA: APS Press 59-60.
2. Brison FR 1974. Pecan culture. Austin USA: Capital Printing.
3. Burns RM Honkala BH 1990. Silvics of North America: 2. Hardwoods. Agriculture Handbook 654. Washington DC USA: U.S. Department of Agriculture Forest Service. Also available on the Internet (individual authors noted) at:
4. Campbell RD 1991. Moving ahead with northern pecans in Ontario. Annu. Report Northern Nut Growers Association 82:94-95.
5. Campbell RD 1995. The best pecans for Ontario. Annu. Report Northern Nut Growers Association 86:78-79.